Glacier Diesel Power 2003-2004.5 Dodge Ram 5.9L Cummins Fuel Filter Adapter | 3/8" Fuel Filter Housing Adapter
Description
Upgrading the lift pump on an early Common Rail Cummins often means relocating fuel delivery away from the factory filter-mounted lift pump. The challenge then becomes supplying the factory fuel filter housing with a clean, reliable fuel source.
The Glacier Diesel Power Fuel Filter Adapter is designed specifically for 2003-2004.5 Dodge Ram 5.9L Cummins trucks equipped with the factory filter-mounted lift pump. This precision-machined billet aluminum adapter replaces the original lift pump assembly and converts the factory fuel filter housing into a simple inlet connection, making it ideal for trucks using a frame-mounted lift pump, custom fuel system, or Fuel Boss mechanical lift pump. The adapter features a 1/4-inch NPT inlet (3/8-inch fuel line size) and a rear port that accepts your choice of AN/JIC fitting for a clean, professional plumbing installation.
Whether you're replacing a failed factory lift pump or building a completely custom fuel system, this adapter provides a reliable connection while preserving the factory fuel filter housing.
Features
- Precision-machined billet aluminum construction
- Proudly made in the USA
- Direct replacement for the factory filter-mounted lift pump
- Converts the factory filter housing into an inlet for aftermarket lift pumps
- 1/4-inch NPT inlet (3/8-inch fuel line size)
- Rear port accepts AN/JIC fittings
- Ideal for custom fuel plumbing
- Compact bolt-on design
Why Relocate the Factory Lift Pump?
The 2003-2004.5 Common Rail Cummins uses a unique filter-mounted electric lift pump located directly on the fuel filter housing.
When upgrading to a higher-capacity aftermarket lift pump or mechanical fuel system, the factory pump often becomes unnecessary. Instead of replacing the entire fuel filter housing, this adapter allows you to retain the OEM filter while supplying it from a new fuel source.
This creates a cleaner fuel system layout, simplifies plumbing, and makes future service easier without sacrificing the factory filtration assembly.
Fuel System Tech Tip
One of the biggest misconceptions is that replacing the factory lift pump means replacing the entire fuel filter housing.
In reality, the factory filter housing can continue to serve as an effective filtration point when supplied by a properly sized aftermarket lift pump. By replacing only the lift pump with a dedicated adapter, you retain the factory mounting location while gaining the flexibility to route fuel however your build requires.
This approach is especially popular on trucks using frame-mounted electric lift pumps, custom fuel systems, and Fuel Boss mechanical lift pump conversions.
Common Uses
- Fuel Boss Mechanical Lift Pump installations
- Frame-mounted electric lift pump conversions
- Custom diesel fuel systems
- AN fuel line conversions
- Factory lift pump replacement
- Fuel system restoration
- Performance diesel builds
- Custom fuel plumbing
Applications
- 2003 Dodge Ram 2500
- 2003 Dodge Ram 3500
- 2004 Dodge Ram 2500 (through mid-year)
- 2004.5 Dodge Ram 3500
- 5.9L Cummins equipped with the factory filter-mounted lift pump
Important Notes
- Fits 2003-2004.5 Dodge Ram 5.9L Cummins trucks equipped with the factory filter-mounted lift pump.
- Designed for use when relocating the lift pump or supplying the factory filter housing from an aftermarket fuel system.
- Features a 1/4-inch NPT inlet (3/8-inch line size).
- Rear port accepts the AN/JIC fitting of your choice for custom plumbing.
- Requires Cummins O-ring Part Number 3010937 (sold separately) along with your preferred 1/4-inch MPT inlet fitting.
- Inspect all O-rings, fittings, and fuel connections for leaks before operating the engine.
Glacier Diesel Power 2003-2004.5 Dodge Ram 5.9L Cummins Fuel Filter Adapter | 3/8" Fuel Filter Housing Adapter
Description
Upgrading the lift pump on an early Common Rail Cummins often means relocating fuel delivery away from the factory filter-mounted lift pump. The challenge then becomes supplying the factory fuel filter housing with a clean, reliable fuel source.
The Glacier Diesel Power Fuel Filter Adapter is designed specifically for 2003-2004.5 Dodge Ram 5.9L Cummins trucks equipped with the factory filter-mounted lift pump. This precision-machined billet aluminum adapter replaces the original lift pump assembly and converts the factory fuel filter housing into a simple inlet connection, making it ideal for trucks using a frame-mounted lift pump, custom fuel system, or Fuel Boss mechanical lift pump. The adapter features a 1/4-inch NPT inlet (3/8-inch fuel line size) and a rear port that accepts your choice of AN/JIC fitting for a clean, professional plumbing installation.
Whether you're replacing a failed factory lift pump or building a completely custom fuel system, this adapter provides a reliable connection while preserving the factory fuel filter housing.
Features
- Precision-machined billet aluminum construction
- Proudly made in the USA
- Direct replacement for the factory filter-mounted lift pump
- Converts the factory filter housing into an inlet for aftermarket lift pumps
- 1/4-inch NPT inlet (3/8-inch fuel line size)
- Rear port accepts AN/JIC fittings
- Ideal for custom fuel plumbing
- Compact bolt-on design
Why Relocate the Factory Lift Pump?
The 2003-2004.5 Common Rail Cummins uses a unique filter-mounted electric lift pump located directly on the fuel filter housing.
When upgrading to a higher-capacity aftermarket lift pump or mechanical fuel system, the factory pump often becomes unnecessary. Instead of replacing the entire fuel filter housing, this adapter allows you to retain the OEM filter while supplying it from a new fuel source.
This creates a cleaner fuel system layout, simplifies plumbing, and makes future service easier without sacrificing the factory filtration assembly.
Fuel System Tech Tip
One of the biggest misconceptions is that replacing the factory lift pump means replacing the entire fuel filter housing.
In reality, the factory filter housing can continue to serve as an effective filtration point when supplied by a properly sized aftermarket lift pump. By replacing only the lift pump with a dedicated adapter, you retain the factory mounting location while gaining the flexibility to route fuel however your build requires.
This approach is especially popular on trucks using frame-mounted electric lift pumps, custom fuel systems, and Fuel Boss mechanical lift pump conversions.
Common Uses
- Fuel Boss Mechanical Lift Pump installations
- Frame-mounted electric lift pump conversions
- Custom diesel fuel systems
- AN fuel line conversions
- Factory lift pump replacement
- Fuel system restoration
- Performance diesel builds
- Custom fuel plumbing
Applications
- 2003 Dodge Ram 2500
- 2003 Dodge Ram 3500
- 2004 Dodge Ram 2500 (through mid-year)
- 2004.5 Dodge Ram 3500
- 5.9L Cummins equipped with the factory filter-mounted lift pump
Important Notes
- Fits 2003-2004.5 Dodge Ram 5.9L Cummins trucks equipped with the factory filter-mounted lift pump.
- Designed for use when relocating the lift pump or supplying the factory filter housing from an aftermarket fuel system.
- Features a 1/4-inch NPT inlet (3/8-inch line size).
- Rear port accepts the AN/JIC fitting of your choice for custom plumbing.
- Requires Cummins O-ring Part Number 3010937 (sold separately) along with your preferred 1/4-inch MPT inlet fitting.
- Inspect all O-rings, fittings, and fuel connections for leaks before operating the engine.